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3D Needle-Tissue Interaction Simulation for Prostate Brachytherapy

  • Orcun Goksel
  • Septimiu E. Salcudean
  • Simon P. DiMaio
  • Robert Rohling
  • James Morris
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3749)

Abstract

This paper presents a needle-tissue interaction model that is a 3D extension of a prior work based on the finite element method. The model is also adapted to accommodate arbitrary meshes so that the anatomy can effectively be meshed using third-party algorithms. Using this model a prostate brachytherapy simulator is designed to help medical residents acquire needle steering skills. This simulation uses a prostate mesh generated from clinical data segmented as contours on parallel slices. Node repositioning and addition, which are methods for achieving needle-tissue coupling, are discussed. In order to achieve real-time haptic rates, computational approaches to these methods are compared. Specifically, the benefit of using the Woodbury formula (matrix inversion lemma) is studied. Our simulation of needle insertion into a prostate is shown to run faster than 1 kHz.

Keywords

Needle Insertion Prostate Brachytherapy Contact Node Needle Shaft Matrix Inversion Lemma 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Orcun Goksel
    • 1
  • Septimiu E. Salcudean
    • 1
  • Simon P. DiMaio
    • 2
  • Robert Rohling
    • 1
  • James Morris
    • 3
  1. 1.Department of Electrical and Computer EngineeringUniversity of British ColumbiaVancouverCanada
  2. 2.Surgical Planning Laboratory, Department of RadiologyBrigham and Women’s HospitalBostonUSA
  3. 3.Vancouver Center, British Columbia Cancer AgencyVancouverCanada

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